Glass article and light guide

摘要: To provide a highly transmissive glass and light guide that allow high internal transmittance of plate to be maintained the spectrum flattened without lowering redox iron value equal or more than certain value. This article comprises which includes 1 80 mass ppm total oxide (t-Fe2O3) in terms Fe2O3, has 0 50% 0.01 4.0 NiO. The comprising are characterized an A flatness is 0.83 more.